#pragma once

#include <functional>
#include <string>
#include <signal.h>
#include "log.hpp"
#include "Socket.hpp"

using func_t = std::function<std::string(std::string& package)>;

class TcpServer
{
public:
    TcpServer(uint16_t port,func_t callback) 
    :_port(port),_callback(callback)
    {}

    bool InitServer()
    {
        _listensock.Socket();
        _listensock.Bind(_port);
        _listensock.Listen();
        lg(Info,"init server ... done");
    }

    void Start()
    {
        signal(SIGCHLD,SIG_IGN);
        signal(SIGPIPE,SIG_IGN);
        while(true)
        {
            std::string clientip;
            uint16_t clientport;
            int sockfd = _listensock.Accept(&clientip,&clientport);
            if(sockfd<0)    continue;
            lg(Info,"accept a new link,sockfd: %d,clientip: %s,clientport: %d",sockfd,clientip.c_str(),clientport);
            //提供服务
            if(fork()==0)
            {
                _listensock.Close();
                std::string inbuffer_stream;
                //数据计算
                while(true)
                {
                    char buffer[1280];
                    ssize_t n=read(sockfd,buffer,sizeof(buffer));
                    if(n>0)
                    {
                        buffer[n]=0;
                        inbuffer_stream +=buffer;

                        lg(Debug,"debug:\n:%s",inbuffer_stream.c_str());

                        while(true)
                        {
                            std::string info = _callback(inbuffer_stream);
                            if(info.empty()) break;
                            lg(Debug,"debug,response:\n%s",info.c_str());
                            lg(Debug,"debug,\n%s",inbuffer_stream.c_str());
                            write(sockfd,info.c_str(),info.size());

                        }
                    }
                    else if(n==0) break;
                    else break;

                }
                exit(0);
            }

            close(sockfd);
        }
    }

    ~TcpServer()
    {}
private:
    uint16_t _port;
    Sock _listensock;
    func_t _callback;
};